Accupro B200400R Corner Radius Boring Bar Solid Carbide

Product Description

The ACCUPRO B200400R is a corner radius boring bar manufactured from submicron solid carbide for precision internal turning and boring operations. It features a right-hand cutting direction with a minimum bore diameter of 0.2 inches and a maximum bore depth of 0.4 inches. The corner radius ranges from 0.0050 to 0.0080 inches, allowing machinists to produce controlled edge breaks and tight-tolerance radii at the base of bored features. The 1/4-inch shank diameter and 2.5-inch overall length make this a compact tool suited for small-bore work on CNC turning centers and manual lathes.

This boring bar is intended for production and job-shop environments where small-diameter internal features require consistent corner geometry. Typical applications include finish boring of hydraulic valve bodies, bearing pockets, and precision housings in ferrous and non-ferrous materials. The bright finish coating and submicron carbide substrate support performance in applications where tool deflection and edge wear must be minimized. Machinists and tool-room professionals select this bar for work where standard insert tooling cannot reach minimum bore diameters in this range.

Key Features

• Submicron solid carbide construction for improved hardness and wear resistance in small-bore applications
• Corner radius range of 0.0050 to 0.0080 inches for controlled edge geometry at bore base
• Minimum bore diameter of 0.2 inches supports tight-clearance internal features
• Right-hand cutting direction compatible with standard CNC and manual lathe setups
• Bright finish coating on carbide substrate with no added coating thickness to affect tolerances
• Compact 2.5-inch overall length with 1/4-inch shank for rigid setup in small-bore toolholders

Compatibility

Designed as an OEM-style solid carbide boring bar for use in standard 1/4-inch bore bar holders and toolpost blocks on CNC turning centers and manual lathes performing right-hand internal turning operations.

Installation Notes

Installation is performed by qualified machinists or tool-room technicians. The machine spindle must be stopped and all axes must be at a safe position before changing or setting tooling. Secure the shank in a properly sized 1/4-inch boring bar holder and verify tool overhang is minimized to reduce deflection on small-diameter cuts. Do not exceed the maximum bore depth of 0.4 inches stated for this tool geometry.